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The EFI community has formed an open source shell environment. Rather than booting directly into a full OS, on some executions, the user can boot to the EFI shell. The shell is an EFI application; it can reside straight within the platform ROM, or on a device for which the drivers are in ROM.
The shell can be used to implement other EFI applications, such as setup, OS install, diagnostic or configuration utilities, and system flash updates; it can also be used to play CDs or DVDs without having to boot to a total operating system, given that an EFI application with the appropriate features is written. Shell commands also make it possible to copy or move files and directories among supported file systems. Drivers can be loaded and unloaded, and a whole TCP/IP stack can also be used from within the shell.
Call request signal is: (A) Seize signal (B) Idle state signal (C) Line identification signal (D) Called subscriber alert signal Ans: Call request
Q. Write short note on Interfacing Keyboard, giving block diagram. Why do we need to introduce circuitry called Keyboard Status Word Generator?
In the statement Write:/15(10) lfa1-lifnr. The values 15 and 11 can also be defined by variable. No, the value of 11 nad 15 is not described by variable.
How does a computer know whether an arriving frame contains an ARP message? Explain. The type field into the frame header gives that the frame contains an ARP message. A sender
What types of data entry services do you perform? Our business is to understand what data you require entered and in what particular format. After an initial analysis is perfor
Q. Describe _blank, _self, _parent and _top tags? These all are attributes of tag. The below example describes each of these attributes. <
what is Throw-way model.
Describe the operation of voltage to frequency ADC. Ans: A voltage-to-frequency converter i.e. VFC is an oscillator that frequency is linearly proportional to a control volt
Explain Star topology. A network utilizes a star topology if each computer attach to a central point. The following figure demonstrates the concept: Star Topology
Discuss briefly subscriber loop system. Subscriber Loop System: Every subscriber in a telephone network is connected usually to the nearest switching office using a dedicated
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